background image

26

Phonitor 2

Phase ø

The  phase  reversal  control  is  another  important  monitoring  func-
tion. As with the solo function, you can choose between L, R and OFF. 
Choose the middle position, OFF, to hear the stereo signal. Switching 
to L reverses the left channel phase (thus inverts by 180°). The same 
effect occurs in the right channel when switching to R.

With  phase  reversal  and  a  simultaneous  activation  of  the  Mono 
switch, you can generate the difference between both audio channels. 
Depending  on  which  channel’s  phase  reversion  you  have  activated, 
what remains will be the channel’s available stereo information. In this 
differentiated signal you can, for instance, now judge whether signals 
to  be  placed  in  the  middle  “sit”  properly  or  not.  If  not,  a  remainder 
of the center signal will not be cancelled out by the phase reversal – 
something which should happen with a true mono signal. Before you 
undertake  this  test,  you  should  eliminate  any  stereo  effects  on  the 
channel you wish to test, as such reverb processing will tend to be re-
tained and invalidate the results.

However, even more important for precision testing of the center sig-
nal can be to discern the intrusion of artifacts. For example through 
this process you can easily detect distortion which may be introduced 
digitally (via converters or internal DAW mixing).

Stereo and Mono

Usually this toggle switch is set to Stereo for regular 
monitoring  of  stereo  signals.  The  Mono  switch  cre-
ates a sum of the stereo channels. 

If, per the above description, you employ this Mono 
switch  along  with  the  Solo,  the  overall  signal  level 
will be approximately 6 dB below a stereo signal and 

mono-switch  only.  This  is  normal,  since  in  Solo  mode  only  a  single 
mono channel is active.

Aside from the above scenario, the Mono switch also offers import-
ant and useful functions in combination with Phase and Solo switches 
in its ability to examine the mono compatibility of a mix. While such 
compatibility  tests  are  essentially  the  same  as  in  earlier  eras,  they 
nonetheless  remain  an  important  standard  in  radio  mixing  or  vinyl 
production.

Control Elements

Содержание Phonitor 2 1280

Страница 1: ...Manual Phonitor2 120 Volt Amplifier for Headphones Active Speakers and Power Amps Models 1280 1281 Version 2 2 03 2016...

Страница 2: ...on by SPL Declaration of CE Conformity The construction of this unit is in compliance with the stan dards and regulations of the European Community Notes on Environmental Protection At the end of its...

Страница 3: ...ontrol 17 Signal Connections XLR Sockets 17 Connecting XLR to other socket formats 17 Learn Button Learn a remote control 17 Bottom DIP Switches 18 Output level adjustment Phonitor2 Insert Loop 18 Fro...

Страница 4: ...IMPORTANT OPERATIONAL ADVICE AND OR WARNINGS THAT MUST BE FOLLOWED BE ESPECIALLY ATTENTIVE TO THESE AND ALWAYS FOLLOW THE ADVICE THEY GIVE The symbol of a lamp directs your attention to explanations...

Страница 5: ...Opening the unit Simply put DON T if you are not a certified SPL tech nician or engineer Really Do not open the device housing as there is great risk you will damage the device or even after being dis...

Страница 6: ...al connections and immediately contact a qualified technician when you think repairs are needed or when moisture or foreign objects may accidentally have reached inside the housing or in cases when th...

Страница 7: ...ielded against HF interference Nonetheless you should carefully consider where you place the unit to avoid electrical disturbances It should be positioned so that you can easily reach it but there are...

Страница 8: ...nals are not altered at all Music sounds more natural and hearing fatigue is drastically reduced Given all that it was easy to understand the enthusiasm with which musicians sound engineers and music...

Страница 9: ...with headphones and loudspeakers Obviously loudspeaker simulation makes no sense when using real loudspeak ers However owners of electrostatic headphones could connect their headphones to the output a...

Страница 10: ...ence quality Monitor Controller the Phonitor2 together with a carefully matched pair of headphones offers profes sional users an excellent monitoring alternative to their main speak ers The audio qual...

Страница 11: ...right left volume differences Switchable level adjustment consumer to professional level 1 1 6dB 12 dB Applications Stereo preamplification and headphone amplification for three sources High quality...

Страница 12: ...to impossible headphone mixing environment An essential reason for such unnatural ambiance is the complete separation of the channels which does not exist either in natural hearing or in stereo loudsp...

Страница 13: ...ions once again They have Signal To Noise Ratio of 116dB and offer a nearly 34dB headroom that yields an unequalled 150dB dynamic range The musical result is not to be mistaken Regardless of the monit...

Страница 14: ...and 10dB correspond to twice the per ceived loudness When it comes to volume the 120 volt technolo gy exhibits a performance in regard to maximum level and dynamic range that is twice that of com mon...

Страница 15: ...the included power cord to the rear 3 pin power input The transformer power cord and inlet of the appliance conform to VDE UL and CSA requirements On Off Switch Use the rear on off switch to activate...

Страница 16: ...P max 35 W Fuses Voltage Selection 115V AC T 1 A L 250 V 230V AC T 500 mA L 250 V 1 Remove Fuse Holder 2 Flip Over 3 Reinstall 1 ON Output 12dB 2 ON Output 22dB 3 ON RCA 10dBV to 4dBu 4 ON Sources 1 1...

Страница 17: ...om audio dealers With the diagram above the dealer can ensure to provide the appropriate cable for your application Learn Button Learn a remote control The volume potentiometer of the Phonitor2 is mot...

Страница 18: ...ill be summed see 4 1 Increase of 12dB for all outputs Switch 1 set to ON 2 Increase of 22dB for all outputs Switch 2 set to ON 3 RCA input level conversion to professional level 10dBV to 0dBu Switch...

Страница 19: ...cludes louder clicks and pops reaching the ear In addition this can avoid unpleasant surprise that follows when a headphone s lower impedance suddenly reproduces an otherwise acceptable Phonitor2 volu...

Страница 20: ...for frequency dependent simulation of your stereo image width by adjustments of interaural time difference This influences the moment in time at which a signal s wave form arrives at the ear and corr...

Страница 21: ...l level difference and on the right the interaural time difference at minimal Crossfeed value and an Angle of 30 degrees The black curves stand for the side of the direct sound wave front while the gr...

Страница 22: ...on the right at a maximum Crossfeed value and an Angle of 15 degrees The black curves stand for the side of the direct sound wave front while the gray curves stand for the opposite side The larger th...

Страница 23: ...precisely matches the theoretically determined time difference values These of course are mainly a starting point to reproduce a real monitor ing setup Formulae for calculations from http www sengpie...

Страница 24: ...you con sider that the Phonitor2 is not an effects machine Instead reevalu ate your aural impression by thinking about this normal headphone monitoring confronts you with a 180 degree sound stage the...

Страница 25: ...he VU display If you choose the 6dB position the range of the display is extended by 6dB With the 6dB switch activated and the needle at 0dB a value of 6dB input level is displayed Solo You can engage...

Страница 26: ...on the channel you wish to test as such reverb processing will tend to be re tained and invalidate the results However even more important for precision testing of the center sig nal can be to discer...

Страница 27: ...ft channel increases 3dB The maximum difference amounts to 6dB which is more than enough to compensate for significant differences 6dB equates to doubling the sound pressure level to achieve a doublin...

Страница 28: ...me of speakers and headphones 2 Note that you should be able to switch quickly and smoothly be tween speaker and headphones when making comparison tests It is also important that you can switch off th...

Страница 29: ...points and divide the distance by 2 We call this result A Now measure the distance between the loudspeaker centers and the location of your ears at the listening position This result we call B The ang...

Страница 30: ...ance 0 18 ohms Attenuation Factor 180 40ohms Frequency Range 10Hz to 480kHz 3dB CMR 82dBu At 1kHz 0dBu input level and unity gain Crosstalk at 1kHz 106dB THD N at 1kHz 0 00091 At 0dBu input level and...

Страница 31: ...m is limited at any point Formants and octaves of an instrument s sounds cannot be narrowed Phase Response Input vs Output Left and Right Channel Measuring output and input 600ohms Volume control Phon...

Страница 32: ...ons this ensures listening without ear fatigue THD vs Output Level W Measuring output and input 600ohms Volume control at 0dB This measurement represents an analysis of THD values over the complete ou...

Страница 33: ...Copy Master Recall Sheet Studio Listening Room Date Headphones Speakers...

Страница 34: ...Model 1280 Manual Phonitor2...

Отзывы: